ram·shack·le 
(rămshăk′əl)
(rămshăk′əl)adj.
So poorly constructed or kept up that disintegration is likely; rickety: a ramshackle cabin in the woods.
[Back-formation from obsolete ranshackled, ramshackle, alteration of ransackled, past participle of ransackle, to ransack, frequentative of Middle English ransaken, to pillage; see RANSACK.]